Public bug reported:
Binary package hint: ubuntu-vm-builder
ubuntu-vm-builder builds images with no post-MBR gap. The first
partition starts at offset 512 bytes, i.e. on sector 1. This is bad
practice; better to start on the first cylinder (as per a default Ubuntu
install) and leave most of cylinder 0 free. Otherwise, it is not
possible to install a boot loader such as grub without blocklists, and
grub says:
grub-setup: warn: This msdos-style partition label has no post-MBR gap;
embedding won't be possible!
grub-setup: warn: Embedding is not possible. GRUB can only be installed in
this setup by using blocklists. However, blocklists are UNRELIABLE and its use
is discouraged.
** Affects: ubuntu-vm-builder (Ubuntu)
Importance: Undecided
Status: New
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ubuntu-vm-builder builds images with no post-MBR gap
https://bugs.launchpad.net/bugs/578199
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